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MCQs

Total Questions : 127 | Page 5 of 13 pages
Question 41. Patients suffering from Von Gierke's disease are unable to perform gluconeogeneis because they have a defective
  1.    pyruvate carboxylase
  2.    glucose 6 phosphatase
  3.    lactate dehydrogenase
  4.    none of these
 Discuss Question
Answer: Option B. -> glucose 6 phosphatase
Question 42. Aldolases splits fructose 1,6 biphosphate into
  1.    glyceraldehyde 3- phosphate
  2.    glyceraldehyde 3- phosphate and dihydroxyacetone phosphate
  3.    None of these
  4.    dihydroxyacetone phosphate
 Discuss Question
Answer: Option B. -> glyceraldehyde 3- phosphate and dihydroxyacetone phosphate
Question 43. The multistep pathways of metabolism are efficient because they
  1.    spread the enzymes for a pathway into several different organelles
  2.    use the same substrate for all of the enzymes in the pathway
  3.    use the same enzyme for all of the substrates in the pathway
  4.    locate all of the enzymes for a pathway in the same place within the cell
 Discuss Question
Answer: Option D. -> locate all of the enzymes for a pathway in the same place within the cell
Question 44. Fructose diphosphate accumulation would
  1.    inhibit glycolysis and gluconeogenesis
  2.    stimulate glycolysis and inhibit gluconeogenesis
  3.    inhibit glycolysis and stimulate gluconeogenesis
  4.    stimulate glycolysis and gluconeogenesis
 Discuss Question
Answer: Option B. -> stimulate glycolysis and inhibit gluconeogenesis
Question 45. Metabolic reactions that break down complex molecules into smaller compounds, thereby releasing usable energy for the cell, are best described as
  1.    catabolic
  2.    photosynthetic
  3.    biosynthetic
  4.    catalytic
 Discuss Question
Answer: Option A. -> catabolic
Question 46. Which of the following enzymes plays an important role in the Cori " cycle?
  1.    Glucose-6-phosphate dehydrogenase
  2.    Lactate dehydrogenase
  3.    Glucokinase
  4.    Glucose isomerase
 Discuss Question
Answer: Option B. -> Lactate dehydrogenase
Question 47. An intermediate which inhibits the activity of fructose 1,6 diphos-phatase would inhibit
  1.    none of these
  2.    gluconeogenesis
  3.    pyrolysis
  4.    glycolysis
 Discuss Question
Answer: Option B. -> gluconeogenesis
Question 48. Glycolysis reactions take place in
  1.    cell membrane
  2.    plasmids
  3.    cytoplasm
  4.    cell wall
 Discuss Question
Answer: Option C. -> cytoplasm
Question 49. What would be the molecular formula for a polymer made by linking ten glucose molecules together by dehydration synthesis, if molecular formula for glucose is C6H,206?
  1.    C60H100O50
  2.    C60H102O51
  3.    (C6H12O6)10
  4.    C60H120O60
 Discuss Question
Answer: Option B. -> C60H102O51
Question 50. In the Glycolysis reaction, for each glucose conversion how many ATP's are produced?
  1.    2
  2.    1
  3.    4
  4.    3
 Discuss Question
Answer: Option A. -> 2

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